1. Department of Electrical and Electronic Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, China
2. Dongguan Institute of Opto-Electronics, Peking University, Guangdong, China
3. Department of Applied Physics, Research Institute for Smart Energy, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, China
4. Master Dynamic Ltd., Hong Kong, China
5. School of Microelectronics, Southern University of Science and Technology, Shenzhen, China
6. Department of Electrical and Electronic Engineering, Joint Appointment with School of Biomedical Sciences, The University of Hong Kong, Pokfulam Road, Hong Kong, China